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gogolik [260]
4 years ago
5

Expand this please 2/9(9/4x-9)

Mathematics
2 answers:
KonstantinChe [14]4 years ago
7 0

Answer:

x-4/2

Step-by-step explanation:

combine like terms

Kryger [21]4 years ago
5 0

Answer: The expanded equation is (1/4)*x - 2

Step-by-step explanation:

We have the equation:

(2/9)*(9/4*x - 9)

First we use the distributive property of the multiplication.

(2/9)*(9/4*x - 9) = (2/9)*(9/4)*x - (2/9)*9

Now we solve the multiplications, here the 9 in the denomitators cancel with the 9 in the numerators:

(2/9)*(9/4)*x - (2/9)*9 = (2/4)*x - 2

now we use that 2/4 = 1/2

(2/4)*x - 2 = (1/4)*x - 2

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3x - 8 - 2x = 0
ki77a [65]

I think the answer is A. I hope this helps

4 0
3 years ago
The photography club has 28 members. There are 12 boys in the club. What is the ratio of boys to girls in simplest form?
Molodets [167]
Steps:
1. Do 28-12= 16 girls
2. Your ratio is 12:16
3. Your answer is B. 3/4
4. This correct because
12 divided by 4 is 3
16 divided by 4 is 4
5. Your answer is 3/4
8 0
4 years ago
Read 2 more answers
Why can a problem with extra information be difficult to solve?
Semenov [28]
I think it is more difficult because it is more for your brain to have to  process at once .
7 0
3 years ago
Like the polar bear, the walrus is a fine swimmer, though it does not have the same endurance. For short periods of time, a walr
Cloud [144]

The swimmer will be 1978.8 m far.

Step-by-step explanation:

The formula to apply here is; speed = distance/time

So in this case, distance =speed * time

Speed = 9.7 m/s

Time = 3.4 minutes ⇒change to seconds, multiplying by 60 sec

Time=3.4×60 = 204 seconds

Distance = 204 × 9.7 = 1978.8 m

Learn More

To find speed : brainly.com/question/1566217

Keywords: speed

#LearnwithBrainly

4 0
4 years ago
Samples of rejuvenated mitochondria are mutated (defective) in 1% of cases. Suppose 18 samples are studied, and they can be cons
Temka [501]

Probability that no samples are mutated is 0.83, probability that at most one sample is mutated is 0.9812 and probability that more than half the samples are mutated is 0.

Given percentage of rejuvenated mitochondria defective is 1%, and sample size is 18.

Binomial distribution is the probability of exactly x successes on n repeated trials and X can have two outcomes.

P(X=x)=C_{n,x} p^{x}(1-p)^{n-x}

percentage of defective rejuvendated mitochondria=1%

p=0.01

Sample size=18

n=18

a) No samples are mutated

This means P(X=0)=C_{18,0}(0.01)^{0} (0.99)^{18}

=0.83

b) At most one sample is mutated.

P(X<=1)=P(X=0)+P(X=1)

so,

P(X=0)=C_{18,0} (0.01)^{0}  (0.99)^{18}

=0.83

P(X=1)=C_{18,1}(0.01)^{1} (0.99)^{17}=

=0.1512

P(X<=1)=0.83+0.1512

=0.9812

c) More than half the samples are mutated.

P(X>9)=P(X=10)+P(X=11)+P(X=12)+P(X=13)+P(X=14)+P(X=15)+P(X=16)+P(X=17)+P(X=18)

Using two decimals digits precision all will be 0.

Hence Probability that no samples are mutated is 0.83, probability that at most one sample is mutated is 0.9812 and probability that more than half the samples are mutated is 0.

Learn more about probability at brainly.com/question/24756209

#SPJ4

4 0
2 years ago
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